The invention discloses an aggregation-induced emission molecule as well as a preparation method and a use thereof. The aggregation-induced emission molecule has a structural formula (shown in the description), wherein when Ar1 and Ar2 are same groups, Ar2 is one of a formula, a formula, a formula or a formula (shown in the description); and when Ar2 is hydrogen, Ar1 is one of a formula, a formula, a formula or a formula (shown in the description). The preparation method comprises the steps of: starting from a formula (shown in the description, wherein X=br, and Y=H or X=H, and Y=Br) and tetraphenyl ethylene boric acid ester, obtaining derivatives of fluorene containing toluene and triphenylamine units by utilizing an acid-induced intramolecular dehydration reaction, linking tetraphenyl ethylene to a ninth site of the fluorine in a conjugated manner by utilizing a Suzuki reaction, and finally obtaining a target compound. According to the compound disclosed by the invention, the heat stability and the aggregation-induced emission property are good, the solid fluorescence quanta of the compound are high in yield and are emitted by blue lights, and the compound can be applied to a luminescent layer material of a blue-light inorganic light emitting diode; and the reaction conditions of the preparation method are mild, and the yield is high.